catalytic converter

2002 TOYOTA SIENNA
135,000 MILES • 6 CYL • 4WD • MANUAL
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MILDRED COTTO
  • MEMBER
  • 1 POST
i just repair my car a week ago i installed the catalytic converter and the engine light back on. the code was po420. what you think i can do?
Jul 5, 2016 at 8:52 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
the code has to be removed with a scanner if that is the problem. it can be an air leak as well in front of converter or the O2 sensor may be bad.
Jul 5, 2016 at 9:24 AM
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